The variable bit rate (VBR) nature of a video stream makes it difficult to build up a video server since that the amount of system resources supporting a VBR stream is time-variant. This property results in poor utilization of system resources due to that a VBR video server may be overloaded in some critical times but underutilized frequently. An efficient data retrieval scheme for VBR video servers is presented in this paper. The basic concept behind the scheme is that we can efficiently utilize the disk bandwidth by using read-ahead and buffering technique. Then, irregular resource usage of a VBR video server can be alleviated and the service capacity can thus be promoted. According to experimental results, we find that the proposed scheme can improve 8%-20% number of served users of a VBR VOD system than the original method with less than 6% additional buffer.
|出版狀態||Published - 1997 12月 1|
|事件||Proceedings of the 1997 1st International Conference on Information, Communications and Signal Processing, ICICS. Part 3 (of 3) - Singapore, Singapore|
持續時間: 1997 9月 9 → 1997 9月 12
|Other||Proceedings of the 1997 1st International Conference on Information, Communications and Signal Processing, ICICS. Part 3 (of 3)|
|期間||97-09-09 → 97-09-12|
All Science Journal Classification (ASJC) codes